import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: a1227
 * Date: 2022-09-03
 * Time: 21:52
 */
public class Text {
    //The Biggest Water Problem
    /*
    public static int sumOfOne(int n){
        if(n < 10){
            return n;
        }
        return sumOfOne(n / 10) + n % 10;
    }

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        n = sumOfOne(n);
        while(n >= 10){
            n = sumOfOne(n);
        }
        System.out.println(n);
    }
    */

    /**
     * [NOIP2010]数字统计
     * @param args
     */
    /*
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int L = scan.nextInt();
        int R = scan.nextInt();
        int count = 0;
        for(int i = L; i <= R; i++){
            int tmp = i;
            while(tmp != 0){
                if(tmp % 10 == 2){
                    count++;
                }
                tmp /= 10;
            }
        }
        System.out.println(count);
    }
     */
}
